Pipe threading and cutting lathe.



No. 780,017. PATENTED JANx 17, 1905'I W.. ALBEE.

PIPE THREADING AND CUTTING LATER.

APPLICATION' FILED 0OT.12. 1904.

E 'SHEETS-SBIBET 1.

S51/wanton Gwknuoeo y V PATENTED JAN. 17, 1905.

W. ALBEEn PIPE THEEADING AND CUTTING' LATHEc APPLIUATION FILED 00T. 12.1904.

2 SHEETS-SHEET 2.

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Mw@ ihn/M@ man Stats Patented January 17, 1905.

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WILLIAM ALBEE, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO KNIGHT AND JILLSONCOMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATION OF INDIANA.

PIPE 'lllirlmEtDllhlGi AND lJT'll-lltlC-i LTI-IE...

SPECIFICATION forming part of Letters latent Na 780,017, dated January17, 1905.

Application filed October l2, 1904. Serial No. 228,232.

Be it known that I, VILLIMI A'Lnun, a citi- Zen oi' the United States,residing at Indianapolis, in the county of Marion and State ot' Indiana,have invented certain new and useful Improvements in Attachments iorPipe llhrcading and Cutting Lathes, oi: which the following is aspecification, reference being had therein to the accom panyingdrawings.

M y invention relates to a certain new and useit'ul improved attachmentfor pipe threading and cutting lathes,as hereinafter described, andparticularly pointed out in the claims.

In the usual operation of cutting' pi pes into short lengths the boresof the pipes where severed were reduced materially by the cutters, whichreduced bores at the severed ends of the pipe had to be removed by meansol1 cutters or reamers, which process was accomplished by a separateoperation to that ol2 cutting' the pipes and threading the ends oi' thepipes.

The object of this invention is to provide a means whereby the reducedbore ot' the eut pipe at the point of 'severance will be removedsimultaneously with the operation ot' threading the pipe.

A further object is to provide means whereby when a sul'licient amountoiE the bur in the )ipe is removed the bur removing and reaming toolwill automatically recede or yield to permit the end of the pipe to bethreaded the required amount.

I attain these objects by means of the attachment for pipe-threadinglathes illustrated in the accompanyingdrawings, in which similarnumerals oi' reference designate like parts throughout the severalviews.

Figure l is a perspective view of a pipelathe, showing my attachmentapplied to the fixed die-carrying head thereof. Fig. 2 an enlargedlongitudinal sectional view ol? the device applied to the lixeddie-carrying head of the pipe-cutting lathe and taken through the line AB. (See Fig. Fig. 3 is an end sectional elevational view of the same,taken through the line C D. (See Fig. 9..) Fig. I is an enlarged detailsectional view oi" the reaming-head, taken through the line G H. (SeeFig. 5.) Fig. 5 is a transverse sectional 50 view ot' the same, takenthrough the line E F. (See Fig. a.) Fig. 6 is a longitudinal sectionaldetail view of a pipe, showing the pipe a't'ter being cut to length andshowing the bur at the bore oil the reduced severed end the-reet; andFig. 7 is a detail similar view ol" a pipe, showing the same completedor iinished, the threads being eut and the bur removed irom the bore atthe severed end therol.

The die-carrying head jl ot the pipe threading and cutting lathe islirmly secured on the ways 2, and the revoluble vise-head 3 is providedwith the vise or grip jaws l, which engage the pipe 5 to hold it firmlywhile being rotated to be cut or undergoing the oporation ol threading.The die-carrying head l may be oi the usual or any type ot' die-carryinghead used in pipe threading and cutting lathes and is provided with thethreadeutting dies (3, which thread-cutting dies are supported andmaintained in their proper position to cut threads of the properdiameter on the pipe to be threaded.

A tapered reamer 7 is provided with the square stem S to prevent itsrotation, which is accurately itted into the square bore oi thereamer-carrying head il, and the same held securely in said bore by theguidingset-screw or pin 10. The reamer-carrying head 9 is cylindricaland [its into the bore ot' the reamer- 30 :arryingsleeve l l toslidelongitudinally therein a limited extent, and the cylindrical stemor reduced projecting end I2 extends :from the back oi the said head S)to iorm a stop whereby the extent ot' baclnvard movement ot the 35 head9 is limited. 'lhe end oi' the stop 12 contacts with the head I3 whenthe head 9 has traversed its full extent.

An adjustable head 13 accurately tits in the bore ol. the sleeve 11 tobe adjusted or moved 90 longitudinally therein, and the same is providedwith a reduced end 14 which lits into the end coils of the coil-springl5. The rear end oiI the sleeve Il is provided with the closing-plug I6,which is screwed or otherwise permanently secured in the end ol thereamercarrying sleeve 11, and the same has its end l reduced andthreaded to be securely screwed into the cross-head 17, which cross-headis securely bolted to the fixed head 1 bythe bolts 18 to securely andfirmly maintain said sleeve 11 in its fixed position with its axis orlongitudinal center concentric with the center of the die-carrying head1 and concentric with the axis of rotation of the head 3.

An adjusting set-screw 19 is screwed into the plug 16, and the same isprovided for the purpose of moving or adjusting the head 13 to cause thehead 9 to project a greater or lesser degree out of the open end of thereamercarrying head 11 in order that the reamer 7 may begin to operateto counterbore the pipe 5 earlier or later during the time of theoperation of threading the pipe. Thus when it is only necessary tothread the end of the pipe a very short distance of its length in orderthat the bur be reduced from the end of the bore of the pipesimultaneously with the operation of cutting or threading an earliercontact of the end of the pipe with the reamer must necessarily takeplace. This is readily accomplished by screwing the set-screw 19 inorder to bring the reamer 7 nearer to the dies 6, and vice versa when alonger thread is required to be cut on the end of the pipe.

In order to prevent the head 9 turning in the sleeve 11, I provide thelongitudinally-extending guide-slot 2O in the sleeve 11, which slot isadapted to receive the projecting prolonged end of the set-screw 10,which latter is capable of sliding freely in said slot, and said slot isof a length sufficient to permit the head 9 to travel its full'extent.

The application of the device to a 4pipe threading and cutting lathe andthe manner of operating the same will be better understood from thefollowing description.

The pipes to be operated upon are first cut to the desired length, andsaid pipes are inserted one by one between the vise or grip-v ping-jawsf1 of the revoluble pipe-carrying head 3, and said pipe 5 is fed up toand between the thread-cutting dies 6 of the fixed die-carrying head 1to be threaded. Immediately the operation of cutting the threads in theend of the revolving pipe begins, or Very soon thereafter, the burredend bore of the pipe comes in contact with the reamer 7, which reamerbeing stationary operates to remove the bur from the interior endportion of the revolving pipe. Immediately the requisite amount ofmaterial or bur has been removed from the interior ofthe end of the boreof the pipe the end of the pipe abuts or shoulders the end of the head9, and as the process of cutting the threads in the pipe continues theend of said pipe is forced against said head, which latter recedes oryields, owing' to the resiliency of the coil-spring 15,and said headcontinues to recede until the pipe is fully threaded. The threadingprocess being completed, the dies 6 are thrown out of engagement withthe pipe 5 and the revoluble headB is caused to recede from thedie-carrying head 1, the jaws f1 opened, and the finished pipe 5removed, and thus the operation may be continued.

Having thus fully described this my invention, what I claim as new anduseful, and desire to cover by Letters Patent of the United Statestherefor, is4

1. In a pipe threading and cutting lathe, the combination with arevoluble pipe-carrying head and a fixed die-carrying head, of aL fixedreamer-carrying sleeve extending centrally within said die-carryinghead, a fixed reamer cutting-tool supported by said sleeve, and anadjustable head, and a spring between said adjustable head and saidreamer, means for adjusting said adjustable head in a longitudinaldirection in said sleeve.

2. In a pipe threading and cutting lathe, the combination with arevoluble pipe-carrying head and a fixed die-carrying head, of a fixedreamer-carrying sleeve extending cen-I trally within said die-carryinghead, a ream er, a reamer-carrying head fitted inthe bore of saidsleeve, an adjustable head adapted to be moved longitudinally withinsaid sleeve, a spring situated within said sleeve between saidreamer-carrying head and said adjustable head and means for preventingthe rotation of said reamer and said reamer-carrying head.

3. In a pipe threading and cutting lathe, the combination with arevoluble pipe-carrying head and a fixed die-oarrying'head, of a fixedreamer-carrying sleeve extending centrally within said die-carryinghead, a reamer, a reamer-carrying head fitted in the bore of saidsleeve, said sleeve having a longitudinallyextendingguide-slot, aguiding screw or pin projecting' from said reamer-carrying head throughsaid slot, an adjustable head adapted to be moved longitudinally withinsaid sleeve, and a spring situated within said sleeve between saidreamer-carrying head and said adjustable head.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM ALBEE.

idfitiiesses:

THOMPSON R. BELL, W. W. CRITcHLow.

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